Stovepipe.



W. W. GRAHAM.

STOVEPIPE.

APPLICATION FILED DBO. 2, 1909.

Patented Apr. 19, 1910.

AENT OFFICE.

WILLIAM W. GRAHAM, OF NEW PHILADELPHIA, OHIO.

STOVEPIPE.

To all whom it may concern:

Be it known that I, IVILLIAM Gnu-1AM, a citizen of the United States,residing at New Philadelphia, in the county of Tuscarawas and State ofOhio, have invented certain new and useful Improvements in Stovepipes;and I do hereby declare that the following is a full, clear, and exactdescription of the same, reference being had to the accompanyingdrawing, making a part of this specification, and to the numerals ofreference marked thereon, in which- Figure 1 is a perspective view,showing the seam of the pipe open. Fig. 2 is a similar view, showing theseam closed. Fig. 3 is a transverse section of a portion of a pipesection showing the longitudinal seam edges separated. Fig. 4 is asimilar view showing the seam edges brought together and the position ofthe different parts before the seam is locked. Fig. 5 is a similar viewshowing the position of parts when the seam is locked.

The present invention has relation to stove pipes and it consists in thenovel con struction hereinafter described and particularly pointed outin the claims.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawing.

In the accompanying drawing, 1 represents a section of stove pipe of theusual size and length. One of the longitudinal seam edges is providedwith the groove 2, which groove is formed by the folds 3 and 4, saidfolds being spaced from each other as illustrated in the drawing. Theopposite longitudinal edge is plain, but is provided with the notches 5,which notches are located in pairs near the ends of the stove pipesections, the notches forming the pairs being spaced so as to providewhat might be termed a lip or tongue 6. The slots 7 are formed bycutting the metal from the body 1 and the fold 3, said slots beinglocated in the body and fold so that they will register with each other,thereby providing an open slot in the body and the fold 3. The fold Iwhich is the one constituting one wall of the open groove 2 is providedwith the short Specification of Letters Patent.

Application filed December 2, 1909.

Patented Apr. 19, 1910.

Serial No. 530,986.

ribs 8, which ribs are bent or pressed from the metal, so that they willenter the lower portion of the slots 7 as best illustrated in Fig. 8.The ribs 8 are for the double purpose, first, bending or springing thetongue 6 upward or through the slot 7 as best illustrated in Fig. 4:when the raw edge of the pipe section is seated or entered in the opengroove 2, and second, the ribs 8 will abut against the tongues 6 or morespecifically the backs of said tongues when they are brought into theposition illustrated in Fig. 5.

It will be understood that as the tongues (3 are bent over and upon theouter surface of the pipe section the parallel edges of the pipe sectionwill be drawn toward each other, thereby snugly seating the raw edge ofthe pipe section in the groove 2 and at the same time bring the ribs 8into contact with the walls of the slots opposite the walls of the slotsover which the tongues are bent,

' thereby producing a rigid seam.

Having fully described my invention what I claim as new and desire tosecure by Letters Patent, is-

1. As an improved article of manufacture, a stove pipe section havinglongitudinal seam edges, one of the seam edges provided with folds andthe other with tongues, said folds adapted to form an open groove, thebody of the section and the adjacent folded portion provided with alinedslots and the other folded portion provided with ribs, said ribs adaptedto enter the slots and the tongues adapted to enter the slots and theribs adapted to force the tongues outwardly through the slots when theseam edges are forced together, substantially as and for the purposespecified.

2. As an improved article of manufacture, a stove pipe section havingseam edges, one of said seam edges provided with folds forming an openlongitudinal groove, and alined slots formed in the body of the pipesection and the adjacent folded portion, ribs formed upon the other ofthe folded portions bounding the longitudinal groove, said ribs adaptedto enter the slots, the opposite seam edge of the pipe section providedwith tongues, said tongues adapted to enter the In testimony that Iclaim the above, I slots and the ribs adapted to bend the have hereuntosubseribed my name in the tongues outward when entered in the slotspresence of two witnesses.

and the tongues adapted to be folded and VILLIAM GRAHAM. when foldedadapted to abut against the) lVitnesses: ribs, substantially as and forthe purposel JOHNS. GRAHAM, specified. HOMER I. N. STAFFORD.

